Package com.github.javaparser.quality

Class Preconditions

java.lang.Object

com.github.javaparser.quality.Preconditions

public final class Preconditions
extends Object

Method Summary

Modifier and Type	Method	Description
static void	checkArgument(boolean expression)	Ensures the truth of an expression involving one or more parameters to the calling method.
static void	checkArgument(boolean expression, Object message)	Ensures the truth of an expression involving one or more parameters to the calling method.
static void	checkNotNull(Object reference)	Ensures that an object reference passed as a parameter to the calling method is not null.
static void	checkNotNull(Object reference, Object message)	Ensures that an object reference passed as a parameter to the calling method is not null.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

checkArgument

public static void checkArgument(boolean expression,
                                 Object message)

Ensures the truth of an expression involving one or more parameters to the calling method.

Parameters:

expression - a boolean expression.

message - the exception message to use if the check fails; will be converted to a string using String.valueOf(Object)

Throws:

IllegalArgumentException - if expression is false.

checkArgument

public static void checkArgument(boolean expression)

Ensures the truth of an expression involving one or more parameters to the calling method.

Parameters:

expression - a boolean expression.

Throws:

IllegalArgumentException - if expression is false.

checkNotNull

public static void checkNotNull(Object reference,
                                Object message)

Ensures that an object reference passed as a parameter to the calling method is not null.

Parameters:

reference - an object reference.

message - the exception message to use if the check fails; will be converted to a string using String.valueOf(Object)

Throws:

IllegalArgumentException - if reference is null.

checkNotNull

public static void checkNotNull(Object reference)

Ensures that an object reference passed as a parameter to the calling method is not null.

Parameters:

reference - an object reference.

Throws:

IllegalArgumentException - if reference is null.